Spray gun



FIG. 1 is a perspective view of the spray gun according to the present invention;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a side elevation view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a spray gun, as shown. 